The Propensity Of Violence!!

[Spartacus Maximus]

The options of possible courses of action depend on how receptive the angry drunk was to dialogue and attempts to calm him down. There really is nothing else to do if the drunk stays angry or refuses to listen. When that is the case, the best and only solution is to leave and let him burn himself out.

Everyone knows that trying to reason with a drunk is nearly impossible.

If the drunk is receptive to talking down and not yet so soused as to remove the last shred of sense, then I would try to isolate him by taking him as far away as possible from the target of his belligerence. I may even sit down with him and occupy him and offer to listen to HIM. Let him talk about what made him angry or whatever else he feels the need to ramble on about. This has work great for me on a few occasions.

[DWx]

If you did what was right by you Bob, then I don't think anyone can ask more. Your family is most important to you and you took care of them as a priority.

What, if you were in my shoes that day, what would you have done differently to deescalate him/the situation??

It might be a little noble, perhaps reckless, but I tend to stick myself right at the forefront of conflict between friends and family and will try to coax people down. I would have stayed because I would have felt a responsibility for the rest of the people there and not just my immediate family. But that's just me. For me personally, the following strikes a chord:

“The only thing necessary for the triumph of evil is that good men should do nothing.”

My personal belief is that if you have the ability to do something or make something happen for the better, then you have a duty to do so. Hence why I'd probably have stayed.